lenz's law

An example of Lenz's Law

An example of Lenz’s Law

Video’s like these; apart from being extremely satisfying to watch, are a perfect representation of one of the most fundamental laws to almost all motors and machinery, Lenz’s Law.

Lenz’s law states that: “An induced electromotive force (emf) always gives rise to a current whose magnetic field opposes the original change in magnetic flux”.

Confusing on the surface, but remembering that:

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How Naruto helped me with Physics :L

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Okay, so Lenz’s Law is all about the direction of the change in magnetic flux linkage opposing the change that created it (or something like that XD). And I can never remember whether or not things will be attracted or repulsed or what XD

So: Naruto is North, Sasuke is South, Sakura is the magnetic material. If Naruto comes towards her, she is like “No way :L” and shoves him away. But if Naruto moves away from her towards Sasuke, she’s like “No come back ;n;”.

Sasuke moves towards Sakura, she thinks he’s trying to kill her, so she shoves him away. But if Sasuke moves towards Naruto, Sakura goes after him.

A2 Physics explained by anime ~

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Wizardry: a great demonstration of Lenz’s Law!

An induced electromotive force (emf) always gives rise to a current whose magnetic field opposes the original change in magnetic flux.

As the magnet moves through the copper pipe, an excellent conductor of electricity, the magnet is inducing a current in the pipe, in turn creating a secondary magnetic field that opposes the movement of the magnet down the pipe. This secondary field causes the magnet to slowly fall through the pipe.

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This is why I’m going into electrical engineering.

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Copper Pipe Magnet.

Neodymium magnets are super strong and when they are dropped through a copper tubed the magnets create a buffer and fall slowly through the tube. This experiment proves Lenz’s Law.

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